2024-10-14
11:50 |
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2024-10-14
11:46 |
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2024-10-14
09:54 |
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2024-10-11
07:16 |
An Efficient Optimisation of a Burst Mode-Operated Fabry-Perot Cavity for Compton Light Sources
/ Mușat, Vlad (CERN ; Oxford U.) ; Cormier, Eric (LP2N, Bordeaux) ; Granados, Eduardo (CERN) ; Latina, Andrea (CERN) ; Santarelli, Giorgio (LP2N, Bordeaux)
The burst mode operation of a Fabry-Perot cavity (FPC) allows for the generation of a high-intensity photon beam in inverse Compton scattering (ICS) sources. The geometry and burst mode parameters of the FPC can be optimised to maximise the scattered photon flux. [...]
2024 - 4 p.
- Published in : JACoW FLS 2023 (2024) TU1C1
Fulltext: PDF;
In : ICFA Advanced Beam Dynamics Workshop on Future Light Sources, Lucerne, Switzerland, 28 Aug - 1 Sep 2023, pp.TU1C1
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2024-10-11
07:16 |
Specifications and Status of the New Electron Cooler for the CERN Antiproton Decelerator (AD)
/ Rossi, Adriana (CERN) ; Accettura, Carlotta (CERN) ; Andreazza, William (CERN) ; Bollazzi, Alessio (CERN) ; Cenede, Jean (CERN) ; Chritin, Nicolas (CERN) ; Coutron, Yannick (CERN) ; Ferreira Somoza, Jose (CERN) ; Frassier, Alexandre (CERN) ; Gamba, Davide (CERN) et al.
A new electron cooler for the Antiproton Decelerator (AD) is being designed at CERN, and will replace the current device (in operation for more than 40 years), during the next Long Shutdown (2026-2028). The functional specifications [ref. [...]
2024 - 6 p.
- Published in : JACoW COOL 2023 (2024) 5-10
Fulltext: PDF;
In : 14th International Workshop on Beam Cooling and Related Topics (COOL '23), Montreux, Switzerland, 8 - 13 Oct 2023, pp.5-10
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2024-10-11
07:16 |
Local plastic deformation effects on the critical current of high-J$_{c}$ Nb$_{3}$Sn strands under uniaxial strain
/ Liu, Yunhao (Hefei, CUST) ; Sun, Yi (Hefei, CUST) ; Gao, Peng (Hefei, CUST) ; Nijhuis, Arend (Twente U., Enschede) ; Devred, Arnaud (CERN) ; Guo, Zichuan (Hefei, CUST) ; Zhu, Huajin (Guangxi Normal U.) ; Xu, Peng (Hefei, CUST) ; Shi, Yi (Hefei, CUST) ; Liu, Fang (Hefei, CUST)
In order to meet the target operating parameters of the toroidal field coils (TFCs) for the next-generation Chinese compact burning plasma tokamak, high critical current density (J$_{c}$) Nb$_{3}$Sn strand will be applied to the high-field winding-package of the TFC. To improve the transverse stiffness of the cable in withstanding the huge Lorentz force and avoiding conductor performance degradation, the short-twist-pitch and copper-wound-strand cable patterns were taken into consideration. [...]
2024 - 7 p.
- Published in : Supercond. Sci. Technol. 37 (2024) 115009
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2024-10-11
07:16 |
Experience with Beam Transfer Function Measurements for Setting-up the Stochastic Cooling System in the CERN Anti-Proton Decelerator (AD)
/ Rey, Stephane (CERN) ; Bastos, Wilker (CERN) ; Caspers, Fritz (CERN) ; Dupuy, Bruno (CERN) ; Gamba, Davide (CERN) ; Höfle, Wolfgang (CERN) ; Louwerse, Reinier (CERN)
Beam transfer function measurements have regularly been used to set-up the adjustable parameters for stochastic cooling systems. We report on the automation of these measurements at CERN that permit efficient set-up of the cooling loops in the anti-proton decelerator (AD) and enables insight into the bandwidth (nominal frequency range of 850 MHz to 1.7 GHz) of the overall system for the longitudinal, horizontal and vertical cooling at the two different beam momenta of 2 GeV/c and 3.5 GeV/c. [...]
2024 - 4 p.
- Published in : JACoW COOL 2023 (2024) THPOSRP22
Fulltext: PDF;
In : 14th International Workshop on Beam Cooling and Related Topics (COOL '23), Montreux, Switzerland, 8 - 13 Oct 2023, pp.THPOSRP22
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2024-10-11
07:16 |
ATF2-3 hardware upgrade and new experimental results to maximize luminosity potential of linear colliders
/ Faus-Golfe, Angeles (IJCLab, Orsay) ; Aryshev, Alexander (KEK, Tsukuba) ; Lyapin, Alexey (Oxford U.) ; Kruchinin, Konstantin (KEK, Tsukuba) ; Terunuma, Nobuhiro (KEK, Tsukuba) ; Fuster-Martinez, Nuria (Valencia U., IFIC) ; Burrows, Philip (Oxford U.) ; Mazzoni, Stefano (CERN) ; Okugi, Toshiyuki (KEK, Tsukuba)
/ATF2 Collaboration
The ATF2-3 beamline is the only facility in the world for testing the Final Focus Beamline of linear colliders and is essential for the ILC and the CLIC projects. A vertical electron beam size of 41 nm (within 10% of the target), a closed-loop intra-bunch feedback of latency 133 ns, and direct stabilization of the beam position at the Interaction Point to 41 nm (limited by IP BPM resolution) have all been achieved at ATF2. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC04
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC04
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2024-10-11
07:15 |
Development of a Field Emission Electron Gun for Low Energy Electron Cooling
/ Tranquille, Gerard (CERN) ; Cenede, Jean (CERN) ; Galante, Bruno (CERN ; PSI, Villigen) ; Welker, Elisabeth-Sena (CERN ; Vienna, Tech. U.)
The use of carbon nanotubes (CNT) as a cold electron source for a low energy electron cooler has been studied in detail. To fully characterise different CNT arrays (conditioning process, emitted current, lifetime) and to investigate the optimum electrical configuration of the source to be used in an electron gun, a cold cathode test bench (CCTB) has been set up. [...]
2024 - 4 p.
- Published in : JACoW COOL 2023 (2024) THPOSRP10
Fulltext: PDF;
In : 14th International Workshop on Beam Cooling and Related Topics (COOL '23), Montreux, Switzerland, 8 - 13 Oct 2023, pp.THPOSRP10
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2024-10-11
07:15 |
Design, manufacturing and validation of the new quench heater discharge power supplies for the protection of superconducting magnets for the High-Luminosity LHC Project at CERN
/ Carrillo, David (CERN) ; Berberat, Raphael (CERN) ; Georgakakis, Spyridon (CERN) ; Guasch-Martinez, Josep (CERN) ; Lopez Cordoncillo, Denisse (CERN) ; de Nicolás Lumbreras, Enrique (CERN) ; Nowak, Edward (CERN) ; Papamichali, Maria (CERN) ; Pojer, Mirko (CERN) ; Rodriguez Mateos, Felix (CERN) et al.
The Quench Heater Discharge Power Supplies (HDS) are magnet protection devices installed in the Large Hadron Collider (LHC) that, upon detection of a magnet quench, release energy into strip heaters that are in thermal contact with the superconducting coils, inducing a resistive transition all along the coils. The new HDS design for protection of the High Luminosity LHC (HL-LHC) Inner Triplet magnets calls for a more advanced design with up-to-date components resulting in a high reliability of the HDS units. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) THPG52
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.THPG52
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